Scientists find link between brain imbalance and chronic fatigue syndrome The GuardianNIH study of ME/CFS points to clear biological hallmarks – STAT STATPeople with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome May Have an “Exhausted” Immune System Scientific AmericanStudy of Patients With a Chronic Fatigue Condition May Offer Clues to Long Covid The New York TimesLong COVID can destroy your ability to exercise. Now we know why. National Geographic